/* My lessons: an album library with lessons presented as a unit's track list. */
.lesson-library {
  --library-paper: #fff;
  --library-mint: #dbead9;
  --library-blue: #dce6f4;
  --library-peach: #f5e2d0;
  --library-lilac: #e8dff1;
  color: var(--ink);
}

.lesson-library :is(h1, h2, h3, h4, p) { overflow-wrap: anywhere; }
.lesson-library .library-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 25px;
}
.lesson-library .library-heading .eyebrow {
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 1.9px;
}
.lesson-library .library-heading h1 {
  font-size: clamp(30px, 3.4vw, 43px);
  line-height: 1.12;
  letter-spacing: -1.6px;
  margin-bottom: 9px;
}
.lesson-library .library-heading p:not(.eyebrow) {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.lesson-library .library-heading-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex-shrink: 0;
  padding-bottom: 2px;
}
.lesson-library .library-heading-actions .secondary {
  background: transparent;
  border-color: var(--line);
  padding: 9px 13px;
}

.lesson-library .library-spotlight {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 31%;
  align-items: center;
  gap: 24px;
  min-height: 244px;
  overflow: hidden;
  padding: 28px 34px;
  border-radius: 23px;
  background: var(--navy);
  color: #fff;
}
.lesson-library .library-spotlight-copy { position: relative; z-index: 2; min-width: 0; }
.lesson-library .library-spotlight .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--lime);
  font-size: 10px;
  letter-spacing: 1.8px;
  margin-bottom: 12px;
}
.lesson-library .library-spotlight .eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.lesson-library .library-spotlight h2 {
  max-width: 680px;
  color: #fff;
  font-size: clamp(22px, 2.6vw, 33px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.9px;
  margin: 0 0 8px;
}
.lesson-library .library-spotlight p:not(.eyebrow) {
  max-width: 530px;
  color: var(--theme-dark-muted, #bdcad7);
  font-size: 13px;
  line-height: 1.55;
  margin: 0 0 5px;
}
.lesson-library .library-spotlight .library-spotlight-unit {
  display: block;
  color: var(--theme-dark-muted, #bdcad7);
  font-size: 12px;
  margin: 0 0 10px;
}
.lesson-library .library-spotlight-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 13px 17px;
  margin-top: 20px;
}
.lesson-library .library-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 43px;
  padding: 11px 17px;
  border-radius: 9px;
  background: var(--lime);
  color: var(--theme-highlight-ink, #203928);
  font-size: 13px;
  font-weight: 750;
  text-decoration: none;
  transition: filter .16s ease, transform .16s ease;
}
.lesson-library .library-cta:hover { filter: brightness(1.07); transform: translateY(-1px); }
.lesson-library .library-cta .icon { width: 17px; height: 17px; }
.lesson-library .library-spotlight-actions > span {
  color: var(--theme-dark-muted, #bdcad7);
  font-size: 11px;
}
.lesson-library .library-spotlight-link {
  padding: 7px 0;
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  text-underline-offset: 4px;
}
.lesson-library .library-spotlight-link:hover { text-decoration: underline; }

/* Flat record sleeve and vinyl artwork, drawn in CSS and hidden from assistive tech. */
.lesson-library .library-record-art {
  position: relative;
  justify-self: center;
  width: 230px;
  height: 205px;
  transform: rotate(-8deg);
  pointer-events: none;
}
.lesson-library .library-record-disc {
  position: absolute;
  width: 182px;
  height: 182px;
  left: 72px;
  top: 6px;
  border: 1px solid #55636d;
  border-radius: 50%;
  background: #0c1520;
  box-shadow: 3px 8px 12px #0003;
}
.lesson-library .library-record-disc::before,
.lesson-library .library-record-disc::after,
.lesson-library .library-record-disc > i {
  position: absolute;
  content: "";
  border: 1px solid #ffffff19;
  border-radius: 50%;
  inset: 12px;
}
.lesson-library .library-record-disc::after { inset: 22px; }
.lesson-library .library-record-disc > i:nth-child(1) { inset: 32px; }
.lesson-library .library-record-disc > i:nth-child(2) { inset: 42px; }
.lesson-library .library-record-disc > i:nth-child(3) { inset: 52px; }
.lesson-library .library-record-label {
  position: absolute;
  inset: 61px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--navy);
}
.lesson-library .library-record-label .icon { width: 22px; height: 22px; }
.lesson-library .library-record-sleeve {
  position: absolute;
  inset: 17px auto auto 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 162px;
  height: 178px;
  padding: 15px;
  border: 1px solid #ffffff6b;
  border-radius: 3px;
  background: var(--lime);
  color: var(--navy);
  overflow: hidden;
  box-shadow: 1px 5px 0 #0001;
}
.lesson-library .library-record-sleeve::before {
  content: "";
  position: absolute;
  width: 130px;
  height: 130px;
  right: -93px;
  top: 40px;
  border: 16px solid var(--navy);
  border-radius: 50%;
  opacity: .93;
}
.lesson-library .library-record-sleeve::after {
  content: none;
}
.lesson-library .library-record-code {
  position: relative;
  max-width: 104px;
  font-size: 9px;
  line-height: 1.5;
  font-weight: 800;
  letter-spacing: 1.2px;
}
.lesson-library .library-record-caption {
  position: relative;
  z-index: 1;
  width: 90px;
  font-size: 25px;
  line-height: .95;
  font-weight: 850;
  letter-spacing: -1.1px;
}
.lesson-library .library-record-caption > span {
  display: block;
  width: 100px;
  margin-top: 10px;
  font-size: 5.5px;
  line-height: 1.4;
  letter-spacing: .65px;
  font-weight: 750;
}
.lesson-library .library-totals {
  display: flex;
  gap: 0;
  padding: 21px 0 24px;
  margin-bottom: 5px;
  border-bottom: 1px solid var(--line);
}
.lesson-library .library-totals > span {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 0 25px;
  border-left: 1px solid var(--line);
}
.lesson-library .library-totals > span:first-child { border: 0; padding-left: 0; }
.lesson-library .library-totals strong { font-size: 21px; line-height: 1.2; letter-spacing: -.6px; }
.lesson-library .library-totals span span { font-size: 12px; color: var(--muted); }

.lesson-library .library-browse { padding-top: 24px; }
.lesson-library .library-section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin-bottom: 18px;
}
.lesson-library .library-section-heading h2 { font-size: 21px; font-weight: 750; letter-spacing: -.65px; }
.lesson-library .library-section-heading p { margin: 0; font-size: 12px; color: var(--muted); }
.lesson-library .library-section-heading .eyebrow { margin-bottom: 6px; font-size: 9px; letter-spacing: 1.6px; color: var(--muted); }
.lesson-library .library-controls {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(110px, 155px) minmax(120px, 175px);
  align-items: end;
  gap: 12px;
}
.lesson-library .library-controls:not(:has(#lesson-subject)) { grid-template-columns: minmax(160px, 1fr) 170px; }
.lesson-library .library-search {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 45px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--library-paper);
}
.lesson-library .library-search > .icon { width: 18px; height: 18px; color: var(--muted); }
.lesson-library .library-search input {
  margin: 0;
  padding: 11px 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: var(--ink);
  font-size: 13px;
  font-weight: 400;
}
.lesson-library .library-search input::placeholder { color: var(--muted); }
.lesson-library .library-search:focus-within { outline: 2px solid var(--blue); outline-offset: 2px; }
.lesson-library .library-select { font-size: 10px; font-weight: 700; color: var(--muted); }
.lesson-library .library-select select {
  min-height: 45px;
  margin-top: 5px;
  padding: 10px 30px 10px 12px;
  border-color: var(--line);
  border-radius: 10px;
  color: var(--ink);
  background-color: var(--library-paper);
  font-size: 12px;
  font-weight: 600;
  text-overflow: ellipsis;
}
.lesson-library .library-status-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 16px 0 12px;
}
.lesson-library .library-filter {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 35px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}
.lesson-library .library-filter > span { font-size: 10px; font-variant-numeric: tabular-nums; opacity: .8; }
.lesson-library .library-filter:hover { border-color: var(--muted); color: var(--ink); }
.lesson-library .library-filter.is-active {
  border-color: var(--navy);
  background: var(--navy);
  color: #fff;
}
.lesson-library .library-filter.is-active > span { color: var(--lime); opacity: 1; }
.lesson-library .library-results-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 37px;
  margin: 0 0 10px;
}
.lesson-library .library-results-meta p { margin: 0; color: var(--muted); font-size: 11px; }
.lesson-library .library-clear { padding: 7px 0; color: var(--blue); font-size: 12px; font-weight: 650; }
.lesson-library .library-clear:hover { text-decoration: underline; }
.lesson-library [hidden] { display: none !important; }

.lesson-library .library-unit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 14px;
}
.lesson-library .library-unit {
  --unit-tone: var(--library-mint);
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--library-paper);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.lesson-library .library-unit[data-tone="blue"] { --unit-tone: var(--library-blue); }
.lesson-library .library-unit[data-tone="peach"] { --unit-tone: var(--library-peach); }
.lesson-library .library-unit[data-tone="lilac"] { --unit-tone: var(--library-lilac); }
.lesson-library .library-unit:hover { border-color: #abb8c4; }
.lesson-library .library-unit[open] { border-color: #b4c1cc; box-shadow: 0 4px 14px #14233706; }
.lesson-library .library-unit-summary {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 124px;
  padding: 18px;
  border-radius: 12px;
  cursor: pointer;
  list-style: none;
}
.lesson-library .library-unit-summary::-webkit-details-marker { display: none; }
.lesson-library .library-unit-summary::marker { content: ""; }
.lesson-library .library-unit-summary:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
.lesson-library .library-unit-cover {
  display: grid;
  place-items: center;
  flex: 0 0 72px;
  width: 72px;
  height: 78px;
  border-radius: 5px;
  overflow: hidden;
  background: var(--unit-tone);
  color: var(--navy);
}
.lesson-library .library-unit-cover > svg { width: 100%; height: 100%; display: block; }
.lesson-library .library-unit-heading { flex: 1; min-width: 0; }
.lesson-library .library-unit-kicker {
  display: block;
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.35;
  letter-spacing: .55px;
  text-transform: uppercase;
  font-weight: 750;
  overflow-wrap: anywhere;
}
.lesson-library .library-unit-heading h3 {
  font-size: 15px;
  line-height: 1.3;
  letter-spacing: -.2px;
  font-weight: 700;
  margin: 0 0 7px;
}
.lesson-library .library-unit-description,
.lesson-library .library-unit-meta {
  display: block;
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}
.lesson-library .library-unit-progress {
  height: 3px;
  margin-top: 10px;
  overflow: hidden;
  border-radius: 3px;
  background: var(--bg);
}
.lesson-library .library-unit-progress > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--blue);
}
.lesson-library .library-unit-toggle {
  display: grid;
  place-items: center;
  flex: 0 0 25px;
  width: 25px;
  height: 25px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
}
.lesson-library .library-unit-toggle .icon { width: 14px; height: 14px; transition: transform .15s ease; }
.lesson-library .library-unit[open] .library-unit-toggle { color: var(--ink); background: var(--bg); }
.lesson-library .library-unit[open] .library-unit-toggle .icon { transform: rotate(180deg); }
.lesson-library .library-unit-tracks { border-top: 1px solid var(--line); padding: 0 16px; }
.lesson-library .library-lesson-row {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) auto;
  align-items: start;
  gap: 10px;
  width: 100%;
  min-height: 94px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.lesson-library .library-lesson-row:last-child { border-bottom: 0; }
.lesson-library .library-lesson-row:hover .library-track-title { color: var(--blue); }
.lesson-library .library-lesson-row:focus-visible { outline-offset: 0; border-radius: 5px; }
.lesson-library .library-track-number {
  padding-top: 2px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.lesson-library .library-track-info { min-width: 0; }
.lesson-library .library-track-title { display: block; margin: 0 0 5px; color: var(--ink); font-size: 14px; line-height: 1.4; font-weight: 650; overflow-wrap: anywhere; }
.lesson-library .library-track-summary { display: block; margin: 0; color: var(--muted); font-size: 11px; line-height: 1.55; overflow-wrap: anywhere; }
.lesson-library .library-track-meta { display: block; margin-top: 6px; color: var(--muted); font-size: 10px; line-height: 1.5; }
.lesson-library :is(.library-track-meta, .library-unit-meta) > span { margin: 0 5px; }
.lesson-library .library-track-state { display: flex; flex-direction: column; align-items: flex-end; gap: 9px; min-width: 78px; }
.lesson-library .library-lesson-status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 22px;
  padding: 3px 7px;
  border-radius: 5px;
  color: var(--muted);
  background: var(--bg);
  font-size: 10px;
  line-height: 1.4;
  font-weight: 700;
  text-align: center;
}
.lesson-library .library-lesson-status[data-status="draft"] { background: #fff0d9; color: #805514; }
.lesson-library .library-lesson-status[data-status="revision"] { background: #fae9de; color: #914321; }
.lesson-library .library-lesson-status[data-status="submitted"] { background: #eaf0ff; color: #355dac; }
.lesson-library .library-lesson-status[data-status="successful"],
.lesson-library .library-lesson-status[data-status="published"] { background: #e6f3e8; color: #356342; }
.lesson-library .library-track-action { display: inline-flex; align-items: center; justify-content: flex-end; gap: 5px; color: var(--blue); font-size: 11px; line-height: 1.4; font-weight: 650; }
.lesson-library .library-track-action .icon { width: 13px; height: 13px; }
.lesson-library .library-more { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 24px 0 8px; text-align: center; }
.lesson-library .library-more p { margin: 0; font-size: 11px; color: var(--muted); }
.lesson-library .library-more .secondary { padding: 10px 23px; }
.lesson-library .library-empty { grid-column: 1 / -1; padding: 44px 24px; border: 1px dashed var(--line); border-radius: 13px; text-align: center; }
.lesson-library .library-empty > .icon { width: 32px; height: 32px; color: var(--muted); margin-bottom: 12px; }
.lesson-library .library-empty h3 { font-size: 17px; margin-bottom: 7px; }
.lesson-library .library-empty p { max-width: 370px; margin: 0 auto 17px; font-size: 13px; color: var(--muted); }

@media (max-width: 1120px) {
  .lesson-library .library-spotlight { padding: 27px; grid-template-columns: minmax(0, 1fr) 26%; gap: 14px; }
  .lesson-library .library-record-art { transform: scale(.84) rotate(-8deg); transform-origin: center; }
  .lesson-library .library-unit-summary { gap: 11px; padding: 15px; }
  .lesson-library .library-unit-cover { flex-basis: 62px; width: 62px; height: 70px; }
  .lesson-library .library-unit-heading h3 { font-size: 14px; }
  .lesson-library .library-lesson-row { grid-template-columns: 19px minmax(0, 1fr); gap: 5px 8px; }
  .lesson-library .library-track-state { grid-column: 2; flex-direction: row; justify-content: space-between; align-items: center; min-width: 0; margin-top: 5px; }
}
@media (max-width: 760px) {
  .lesson-library .library-heading { align-items: flex-start; gap: 16px; }
  .lesson-library .library-heading-actions .secondary { font-size: 12px; padding: 9px 11px; }
  .lesson-library .library-spotlight { grid-template-columns: minmax(0, 1fr) 26%; min-height: 231px; padding: 25px; }
  .lesson-library .library-record-art { transform: scale(.72) rotate(-8deg); }
  .lesson-library .library-unit-grid { grid-template-columns: 1fr; }
  .lesson-library .library-unit-cover { flex-basis: 70px; width: 70px; height: 76px; }
  .lesson-library .library-unit-summary { gap: 15px; padding: 17px; }
  .lesson-library .library-unit-heading h3 { font-size: 15px; }
  .lesson-library .library-lesson-row { grid-template-columns: 23px minmax(0, 1fr) auto; gap: 10px; }
  .lesson-library .library-track-state { grid-column: auto; flex-direction: column; align-items: flex-end; margin: 0; min-width: 78px; }
}
@media (max-width: 540px) {
  .lesson-library .library-heading { flex-direction: column; margin-bottom: 21px; gap: 14px; }
  .lesson-library .library-heading h1 { font-size: 34px; }
  .lesson-library .library-heading p:not(.eyebrow) { font-size: 13px; }
  .lesson-library .library-heading-actions { padding: 0; }
  .lesson-library .library-spotlight { display: block; min-height: 0; padding: 25px 22px; border-radius: 18px; }
  .lesson-library .library-spotlight-copy { max-width: 100%; }
  .lesson-library .library-spotlight h2 { font-size: 27px; padding-right: 0; }
  .lesson-library .library-spotlight p:not(.eyebrow) { max-width: 100%; font-size: 12px; }
  .lesson-library .library-spotlight-actions { gap: 12px; margin-top: 19px; }
  .lesson-library .library-record-art { display: none; }
  .lesson-library .library-totals { padding: 18px 0 21px; justify-content: space-between; }
  .lesson-library .library-totals > span { display: flex; flex-direction: column; gap: 3px; padding: 0 14px; }
  .lesson-library .library-totals > span:last-child { padding-right: 0; }
  .lesson-library .library-totals strong { font-size: 22px; }
  .lesson-library .library-totals span span { font-size: 10px; }
  .lesson-library .library-browse { padding-top: 20px; }
  .lesson-library .library-section-heading { margin-bottom: 17px; }
  .lesson-library .library-section-heading h2 { font-size: 20px; }
  .lesson-library .library-section-heading p { font-size: 11px; }
  .lesson-library .library-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .lesson-library .library-controls:not(:has(#lesson-subject)) { grid-template-columns: minmax(0, 1fr); }
  .lesson-library .library-search { grid-column: 1 / -1; }
  .lesson-library .library-select select { font-size: 12px; }
  .lesson-library .library-status-filters { gap: 6px; padding-top: 14px; }
  .lesson-library .library-filter { min-height: 36px; padding: 7px 9px; font-size: 11px; }
  .lesson-library .library-filter > span { font-size: 9px; }
  .lesson-library .library-unit-grid { gap: 11px; }
  .lesson-library .library-unit-summary { min-height: 115px; gap: 11px; padding: 14px; }
  .lesson-library .library-unit-cover { flex-basis: 58px; width: 58px; height: 68px; }
  .lesson-library .library-unit-heading h3 { font-size: 14px; margin-bottom: 6px; }
  .lesson-library .library-unit-kicker { font-size: 8px; }
  .lesson-library .library-unit-meta { font-size: 10px; }
  .lesson-library .library-unit-toggle { flex-basis: 23px; width: 23px; height: 23px; }
  .lesson-library .library-unit-tracks { padding: 0 13px; }
  .lesson-library .library-lesson-row { grid-template-columns: 20px minmax(0, 1fr); gap: 5px 8px; padding: 15px 0; }
  .lesson-library .library-track-title { font-size: 13px; }
  .lesson-library .library-track-summary { font-size: 11px; }
  .lesson-library .library-track-state { grid-column: 2; flex-direction: row; justify-content: space-between; align-items: center; min-width: 0; margin-top: 6px; }
  .lesson-library .library-track-meta { font-size: 10px; }
  .lesson-library .library-lesson-status { font-size: 10px; }
  .lesson-library .library-track-action { font-size: 11px; }
}
@media (prefers-reduced-motion: reduce) {
  .lesson-library :is(.library-cta, .library-unit, .library-unit-toggle .icon) { transition: none; }
  .lesson-library .library-cta:hover { transform: none; }
}